history of the atom by hannah and tyler

By tannah.2018
  • 400

    Democritus (B.C.)

    Democritus (B.C.)
    He discoverd that everyhing is made of an atom He believe them to be tiny uncuttable particles.
    He based his theory on observations and natural curiosity.
    He just thought it was a tiny sphere like shaped particle. Coffey, Jerry. "Democritus Atom." Universe Today. N.p., 22 Mar. 2010. Web. 19 Feb. 2015

  • Dalton

    Dalton
    He discovered that matter is made of tiny particles, it consists of invisible atoms, and its arranged in combinations to make difffernt compounds.
    He used experiments to make this discovery. Williams, Matt. "John Dalton's Atomic Model." Universe Today. N.p., 01 Dec. 2014. Web. 20 Feb. 2015

  • Thomson

    Thomson
    He discovered that the atom consisted of substance particles called protons and electrons, and they are positively and negatively charged.
    He used an experiment called the "Gold Foil" experiment.
    His famous modell is the "Plum Puddng" model. De Leon, N. "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p., n.d. Web. 23 Feb. 2015.

  • Rutherford

    Rutherford
    Rutherford discovered that the tiny nucleus was where the atoms mass is concentrated and electrons surround it. He found this by the "gold foil" expirement where his results tested true. This scientist explained the atom to have a hard dense nucleus in the middle with electrons floating around it. Saffman, Mark. "Atoms." World Book. N.d. World Book Advanced. Web. 20 Feb. 2015.

  • Bohr

    Bohr
    Bohr explained that electrons travel in a specific orbit around the nucleus and that an electron emits light when it jumps from an outer orbit to an inner orbit. The field of physics called quantum mechanics explains this. Saffman, Mark. "Atoms." World Book. N.d. World Book Advanced. Web. 20 Feb. 2015.

  • Heisenburg and Schrodinger

    Heisenburg and Schrodinger
    Using the "scrhodinger equation" Scrhodinger developed a mathmatical equation showing the wave-like behavior of atoms. He said electrons are simular to waves. He discovered this with the two-split expirement. Coffey, Jerry. "Democritus Atom." Universe Today. N.p., 22 Mar. 2010. Web. 19 Feb. 2015.